diff options
Diffstat (limited to 'lib/libc/gen/termios.c')
| -rw-r--r-- | lib/libc/gen/termios.c | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/lib/libc/gen/termios.c b/lib/libc/gen/termios.c new file mode 100644 index 0000000..7e9f169 --- /dev/null +++ b/lib/libc/gen/termios.c @@ -0,0 +1,265 @@ +/*- + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)termios.c 8.2 (Berkeley) 2/21/94"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <sys/types.h> +#include <sys/fcntl.h> +#include <sys/ioctl.h> +#include <sys/time.h> + +#include <errno.h> +#include <string.h> +#define TTYDEFCHARS +#include <termios.h> +#include <unistd.h> +#include "un-namespace.h" + +int +tcgetattr(int fd, struct termios *t) +{ + + return (_ioctl(fd, TIOCGETA, t)); +} + +int +tcsetattr(int fd, int opt, const struct termios *t) +{ + struct termios localterm; + + if (opt & TCSASOFT) { + localterm = *t; + localterm.c_cflag |= CIGNORE; + t = &localterm; + } + switch (opt & ~TCSASOFT) { + case TCSANOW: + return (_ioctl(fd, TIOCSETA, t)); + case TCSADRAIN: + return (_ioctl(fd, TIOCSETAW, t)); + case TCSAFLUSH: + return (_ioctl(fd, TIOCSETAF, t)); + default: + errno = EINVAL; + return (-1); + } +} + +int +tcsetpgrp(int fd, pid_t pgrp) +{ + int s; + + s = pgrp; + return (_ioctl(fd, TIOCSPGRP, &s)); +} + +pid_t +tcgetpgrp(int fd) +{ + int s; + + if (_ioctl(fd, TIOCGPGRP, &s) < 0) + return ((pid_t)-1); + + return ((pid_t)s); +} + +pid_t +tcgetsid(int fd) +{ + int s; + + if (_ioctl(fd, TIOCGSID, &s) < 0) + return ((pid_t)-1); + + return ((pid_t)s); +} + +int +tcsetsid(int fd, pid_t pid) +{ + + if (pid != getsid(0)) { + errno = EINVAL; + return (-1); + } + + return (_ioctl(fd, TIOCSCTTY, NULL)); +} + +speed_t +cfgetospeed(const struct termios *t) +{ + + return (t->c_ospeed); +} + +speed_t +cfgetispeed(const struct termios *t) +{ + + return (t->c_ispeed); +} + +int +cfsetospeed(struct termios *t, speed_t speed) +{ + + t->c_ospeed = speed; + return (0); +} + +int +cfsetispeed(struct termios *t, speed_t speed) +{ + + t->c_ispeed = speed; + return (0); +} + +int +cfsetspeed(struct termios *t, speed_t speed) +{ + + t->c_ispeed = t->c_ospeed = speed; + return (0); +} + +/* + * Make a pre-existing termios structure into "raw" mode: character-at-a-time + * mode with no characters interpreted, 8-bit data path. + */ +void +cfmakeraw(struct termios *t) +{ + + t->c_iflag &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR); + t->c_iflag |= IGNBRK; + t->c_oflag &= ~OPOST; + t->c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP|PENDIN); + t->c_cflag &= ~(CSIZE|PARENB); + t->c_cflag |= CS8|CREAD; + t->c_cc[VMIN] = 1; + t->c_cc[VTIME] = 0; +} + +/* + * Obtain a termios structure which is similar to the one provided by + * the kernel. + */ +void +cfmakesane(struct termios *t) +{ + + t->c_cflag = TTYDEF_CFLAG; + t->c_iflag = TTYDEF_IFLAG; + t->c_lflag = TTYDEF_LFLAG; + t->c_oflag = TTYDEF_OFLAG; + t->c_ispeed = TTYDEF_SPEED; + t->c_ospeed = TTYDEF_SPEED; + memcpy(&t->c_cc, ttydefchars, sizeof ttydefchars); +} + +int +tcsendbreak(int fd, int len __unused) +{ + struct timeval sleepytime; + + sleepytime.tv_sec = 0; + sleepytime.tv_usec = 400000; + if (_ioctl(fd, TIOCSBRK, 0) == -1) + return (-1); + (void)_select(0, 0, 0, 0, &sleepytime); + if (_ioctl(fd, TIOCCBRK, 0) == -1) + return (-1); + return (0); +} + +int +__tcdrain(int fd) +{ + return (_ioctl(fd, TIOCDRAIN, 0)); +} + +__weak_reference(__tcdrain, tcdrain); +__weak_reference(__tcdrain, _tcdrain); + +int +tcflush(int fd, int which) +{ + int com; + + switch (which) { + case TCIFLUSH: + com = FREAD; + break; + case TCOFLUSH: + com = FWRITE; + break; + case TCIOFLUSH: + com = FREAD | FWRITE; + break; + default: + errno = EINVAL; + return (-1); + } + return (_ioctl(fd, TIOCFLUSH, &com)); +} + +int +tcflow(int fd, int action) +{ + struct termios term; + u_char c; + + switch (action) { + case TCOOFF: + return (_ioctl(fd, TIOCSTOP, 0)); + case TCOON: + return (_ioctl(fd, TIOCSTART, 0)); + case TCION: + case TCIOFF: + if (tcgetattr(fd, &term) == -1) + return (-1); + c = term.c_cc[action == TCIOFF ? VSTOP : VSTART]; + if (c != _POSIX_VDISABLE && _write(fd, &c, sizeof(c)) == -1) + return (-1); + return (0); + default: + errno = EINVAL; + return (-1); + } + /* NOTREACHED */ +} |
